class_docstr: MovingMnist Dataset.
code: def frame_height(self):
      return 64
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  import os
  import numpy
  from tensor2tensor.data_generators import generator_utils
  from tensor2tensor.data_generators import problem
  from tensor2tensor.data_generators import video_utils
  from tensor2tensor.layers import modalities
  from tensor2tensor.utils import contrib
  from tensor2tensor.utils import registry
  import tensorflow.compat.v1
  import tensorflow_datasets
  from tensorflow_datasets.video import moving_sequence
label_desc: Use image node_id 2 for calling the VideoMovingMnist obj's underlying member method code with example usage: obj.frame_height() and returns: int